Good or Bad Script?

The Boy watches the documentary.
He asks "Daddy, why does war have to take place?"
Father: "Because, The world would be a better place without the bad guys."
The boy yet asks "Is War fun? Why does the man fall to the ground and not move?"
The father pauses.
He recalls what happened.
"Because... Because...-"

13 years later...

*The boy speaks, but in a lower tone*
"Dad, I m here at the AirPort. You can just come out. I'll be waiting."
"Alright son."

Moments later...

*Crash*
*Explosions*
(Woman screaming)
*GunShot*
The Father, makes a run for the entrance.
A Terrorist spots him, and shot him.
The boy watches as his father falls to the ground and lay motionless.

The Script by then had all been very nicely phrased.
Until Some Dumbasses added this:

"NOOOOOOOOOOOOOOOOOOOOOOOOOOOOO!" The boy shouted hysterically.
"F**K YOU ALL!"
"YOU B*LLESS GAGS!"
*Picks up an AK and charged into the building*
"TAKE THIS B*TCH!"
*Fires his gun*
"AND THAT!!"

"RRRRAAAAWWWWWWWWWRRRRRRRRRRR!!!"
*Begins uttering unknown language, and fires his gun at all eight direction*
"MUSTAVA ! KOON RAGNA ! ALEI YEO ALEI YEO"
"EAT MY CRAP YOU SON OF A HITLER!"

--- Unrealistic ending.